JSC stress test stress/shared-array-buffer-sort-while-different-thread-is-modifying.js.default is flaky only on ppc64le. It failed on our ppc64le CI on: Jan 19, Jan 8, Jan 5, and Dec 13 (first known failure). The error looks like this: Running stress/shared-array-buffer-sort-while-different-thread-is-modifying.js.default stress/shared-array-buffer-sort-while-different-thread-is-modifying.js.default: Exception: JavaScript execution terminated. stress/shared-array-buffer-sort-while-different-thread-is-modifying.js.default: ERROR: Unexpected exit code: 1 FAIL: stress/shared-array-buffer-sort-while-different-thread-is-modifying.js.default which doesn't tell us very much.
(In reply to Michael Catanzaro from comment #0) > JSC stress test > stress/shared-array-buffer-sort-while-different-thread-is-modifying.js. > default is flaky only on ppc64le. It failed on our ppc64le CI on: Jan 19, > Jan 8, Jan 5, and Dec 13 (first known failure). Well surprise, yesterday (Jan 26) it failed on s390x as well. So the bug is probably not *truly* architecture-specific.
OK, today it failed on both s390x and x86_64. Since it's failing on x86_64, I can report this to upstream. And it's clearly not a ppc64le issue after all, so removing from PPCTracker.
At least a bit good news from my point of view :-) I would suspect some bad timing or depending on how much loaded the worker is (they are all VMs) ...
Possibly fixed by https://trac.webkit.org/changeset/273779/webkit. I'll reopen if I continue seeing test failures.